BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Chapter 46, Problem 1A
Summary Introduction
Introduction:
The small intestine is the site in the gastrointestinal tract where the maximum digestion and almost all the absorption takes place. The maximum digestion is the result of liver and pancreatic secretions into the duodenum. The absorption is due to the small intestines ability to increase its surface area.
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The small intestine is specialized for absorption because it
a. is the last section of the digestive tract and retains food the longest.
b. has saclike extensions along its length that collect food.
c. has no outlet so food remains within it for longer periods of time.
d. has an extremely large surface area that allows extended exposure to food.
It is occasionally necessary for a person to have their gallbladder surgically removed. How will such a person's digestive process be altered?
A.
Pepsinogen would not be converted into pepsin before entering the lumen of the stomach.
B.
The person would be unable to digest fats.
C.
Mucus would not protect the stomach lining.
D.
Water would not be extracted from forming feces.
E.
Bile would go directly from the liver to the duodenum.
Which of the following is true about segmentation in the small intestine?a. It is a type of peristalsis.b. It moves chyme only from the duodenum to the ileum.c. Its frequency is the same in each intestinal segment.d. It is unaffected by cephalic phase stimuli.e. It produces a slow migration of chyme to the large intestine.
Chapter 46 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 46.1 - Prob. 1LOCh. 46.1 - Prob. 2LOCh. 46.1 - Prob. 3LOCh. 46.2 - Prob. 1LOCh. 46.2 - Prob. 2LOCh. 46.3 - Prob. 1LOCh. 46.3 - Prob. 2LOCh. 46.4 - Prob. 1LOCh. 46.4 - Explain how absorbed nutrients move into the blood...Ch. 46.5 - Prob. 1LO
Ch. 46.5 - Prob. 2LOCh. 46.5 - Prob. 3LOCh. 46.6 - Prob. 1LOCh. 46.6 - Prob. 2LOCh. 46.7 - Prob. 1LOCh. 46.7 - Prob. 2LOCh. 46.7 - Prob. 3LOCh. 46.8 - Prob. 1LOCh. 46.8 - Describe how rumination works.Ch. 46.8 - Prob. 3LOCh. 46 - Prob. 1DACh. 46 - If you constructed a phylogeny using molecular...Ch. 46 - Prob. 1IQCh. 46 - Prob. 2IQCh. 46 - Prob. 3IQCh. 46 - Prob. 4IQCh. 46 - How is the digestion of fats different from that...Ch. 46 - Although the stomach is normally thought of as the...Ch. 46 - After being absorbed through the intestinal...Ch. 46 - Which of these pairings is incorrect? a. Fat...Ch. 46 - Intestinal microorganisms aid digestion and...Ch. 46 - Prob. 6UCh. 46 - Which of the following represents the action of...Ch. 46 - Prob. 1ACh. 46 - The primary function of the large intestine is to...Ch. 46 - Inactive forms of some molecules are secreted a....Ch. 46 - Prob. 4ACh. 46 - Many birds possess crops, although few mammals do....Ch. 46 - Suppose that you wanted to develop a new treatment...Ch. 46 - How could a drop in plasma proteins and a decrease...Ch. 46 - Unlike many cases of convergence (see section...Ch. 46 - Prob. 5S
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- The bile from the liver is delivered to the _______. a. stomach b. liver c. small intestine d. colonarrow_forwardFigure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forwardDigestive enzymes that chemically digest most of our ingested food are secreted by the a. liver. b. small intestine. c. pancreas. d. salivary glands.arrow_forward
- Which of the following is True?a. The human stomach maintains a very high pH.b. Gastric glands in the stomach wall secrete pepsinogen. c. Bile is released into the stomach from the liver.d. Many different nutrients are absorbed through the stomach.arrow_forwardnticipation of eating food causes an increase in secretion of gastric juice. This phase of gastric secretion is called the_________ phase. Select one: a. conscious b. pancreatic c. gastric d. intestinal e. cephalicarrow_forwardThe principal function for intestinal goblet cells is: Select one: t of a. secreting digestive enzyme. b. absorbing nutrients. C. secreting one of several various hormones. d. secreting mucus.arrow_forward
- Which of the following statements is true?a. Intracellular digestion commonly occurs in vertebrates.b. Absorption of nutrients always requires active transport.c. Alimentary canals have two openings, whereas gastrovascularcavities have only one.d. Extracellular, but not intracellular, digestion requires hydrolyticenzymes.e. Most minerals are absorbed by simple diffusion.arrow_forwardThe region of the digestive tract most responsible for absorption of nutrients is the: a. stomach b. small intestine c. large intestine d. liverarrow_forwardA. What is/are the primary role(s) of the large intestine? a. to complete enzymatic digestion and store indigestible material b. to initiate enzymatic digestion of carbohydrates and to store water c. to absorb water from digested material, with essentially no digestive role of its own d. to secrete water into the material that is left over after all available nutrients have been absorbed e. to digest fats A. In the intestine most nutrients are absorbed regardless of whether the body has an immediate need or shortfall of them; ie there is little control over amounts taken up – which of the following does not follow this rule? a. absorption of sodium b. absorption of water c.absorption of iron d. absorption of fat soluble vitamins e. none of the above follow this rule – close control is exerted over all of themarrow_forward
- There are two different kinds of secretions associated with the digestive system that needs to be understood to avoid confusion when describing how the digestive system functions. Which one of these secretions will be involved in the control of digestion through the blood? A.Endocrine B.Exocrinearrow_forwardFigure 16.7 Which of the following statements about the digestive system is false?a. Chyme is a mixture of food and digestive juices that is produced in the stomach.b. Food enters the large intestine before the small intestine.c. In the small intestine, chyme mixes with bile, which emulsifies fats.d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forwardThe _______ and _______ play important roles in the digestive process by producing chemicals that are required to digest proteins, lipids, and carbohydrates.a. liver; pancreasb. liver; gallbladderc. kidneys; appendixd. pancreas; gallbladderarrow_forward
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